Bill from Minneapolis, Mn writes
I know the product is not listed for quack grass, but when I sprayed a patch, while spraying for bent grass, the tips of the leaves turned white. Would additional spraying have any beneficial effect?
Since quackgrass is not on the label to be controlled by the Tenacity, we cannot recommend you use it for this application. We do, however, carry Certainty, which is a selective post-emergent herbicide like Tenacity, that does have Quackgrass listed on the label under weeds controlled. You can see the dilutions and what grasses are tolerant of Certainty on the product label.
Answer last updated on: 06/06/2017